input[type='checkbox'].checkbix { 
    position: absolute;
    opacity: 0;
    z-index: -1;
}

input[type='checkbox'].checkbix + label {
  position: relative;
  display: inline-flex;
  align-items: center;
  color: inherit;
  transition: all 250ms cubic-bezier(.4,.0,.23,1);
  margin-bottom: .15rem;
}

input[type='checkbox'].checkbix + label > span {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-right: .5em;
  width: 16px;
  height: 16px;
  background: transparent;
  border: .1rem solid #333;
  border-radius: 1px;
  cursor: pointer;  
  transition: all 250ms cubic-bezier(.4,.0,.23,1);
  position: relative;
}

input[type='checkbox'].checkbix:focus + label > span {
    outline: 0;
    border-color: rgb(0,20,20);
    box-shadow: 0 0 0 1px rgba(0,20,20,.5);
}

input[type='checkbox'].checkbix:checked + label > span {
  background: #5ECD62;
  border: .1rem solid transparent;
  animation: reveal 200ms cubic-bezier(.4,.0,.5,1);
}

input[type='checkbox'].checkbix:checked + label > span:before {
  content: "";
  margin: auto;
  position: absolute;
  top: -1px; 
  left: 0; 
  bottom: 0; 
  right: 0;

  border-right: 2px solid transparent;
  border-bottom: 2px solid transparent;
  transform: rotate(45deg);
  /*transform-origin: 0% 100%;*/
  animation: checkboxcheck 125ms 50ms cubic-bezier(.1,.0,.1,1) forwards;
}

@keyframes reveal{
  0%{
    transform: scale(1);
  }
  33%{    
    transform: scale(.5);
  }
  100%{
    transform: scale(1);    
  }
}

@keyframes checkboxcheck {
  0%{
    width: 0;
    height: 0;
    border-color: white;
    transform: rotate(45deg);
  }
  33%{
    width: .2em;
    height: .3em;
    transform: rotate(45deg);
  }
  100%{    
    width: .2em;
    height: .4em;    
    border-color: white;
    transform: rotate(45deg);
  }
}

/* Size */
input[type='checkbox'].checkbix[data-size='large'] + label > span {
	width: 24px;
	height: 24px;
}

input[type='checkbox'].checkbix[data-size='large'] + label > span:before {
	top: -2px;
	animation: checkboxchecklarge 125ms 50ms cubic-bezier(.1,.0,.1,1) forwards;
	border-right: 3px solid transparent;
	border-bottom: 3px solid transparent;
	box-sizing: content-box;
}

@keyframes checkboxchecklarge {
  0%{
    width: 0;
    height: 0;
    border-color: white;
    transform: rotate(45deg);
  }
  33%{
    width: .3em;
    height: .6em;
    transform: rotate(45deg);
  }
  100%{    
    width: .3em;
    height: .6em;    
    border-color: white;
    transform: rotate(45deg);
  }
}

/* Shape */
input[type='checkbox'].checkbix[data-shape='circled'] + label > span {
	border-radius: 100%;
}

/* Colors */
input[type='checkbox'].checkbix[data-color='black']:checked + label > span {
	background: #111;
}

input[type='checkbox'].checkbix[data-color='blue']:checked + label > span {
	background: #0074D9;
}

input[type='checkbox'].checkbix[data-color='red']:checked + label > span {
	background: #FF4136;
}

input[type='checkbox'].checkbix[data-color='gray']:checked + label > span {
	background: #AAAAAA;
}

input[type='checkbox'].checkbix[data-color='orange']:checked + label > span {
	background: #FF851B;
}
